Home / 18,769.95-28,146.62-5,619.87

Finding the Fourth Proportional to 18,769.95, 28,146.62 and 5,619.87

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Solution

The fourth proportional to 18,769.95, 28,146.62 and 5,619.87 is: 8,427.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,769.95 : 28,146.62 = 5,619.87 : x
  2. Step 2: Convert to fraction form
    18,769.95/28,146.62 = 5,619.87/x
  3. Step 3: Cross multiply
    18,769.95x = 28,146.62 × 5,619.87
  4. Step 4: Simplify right side
    18,769.95x = 158,180,359.39
  5. Step 5: Solve for x
    x = 158,180,359.39/18,769.95
  6. Step 6: Final answer
    x = 8,427.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.